package com.study;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class MyTest {

    private static Logger logger = LoggerFactory.getLogger(MyTest.class);

    public static void main(String[] args) throws IOException {
        System.out.println();
    }


}

interface Int{

}
class Demo implements Int{
    int a;

    public Demo(int a){
        this.a = a;
    }
}
class dDemo extends Demo implements  Int{
    public dDemo(int a) {
        super(a);
    }
}